Sodium Acetate Anhydrous: Full Material Safety Data Sheet (MSDS)

Identification

Product Name: Sodium Acetate Anhydrous
Chemical Formula: C₂H₃NaO₂
Molecular Weight: 82.03 g/mol
CAS Number: 127-09-3
Synonyms: Acetic acid sodium salt, Anhydrous sodium acetate
Recommended Use: Buffering agent, chemical reagent, textile processing, laboratory reagent
Supplier Details: Information needs to stay current with local and regional distributors or manufacturers; check safety contacts for emergency and technical support hotlines.
Emergency Telephone: Local poison control center and chemical emergency notification number listed in the contact directory.

Hazard Identification

GHS Classification: Not classified as hazardous under GHS standards for acute toxicity.
Signal Word: Not applicable
Hazard Statements: May cause slight skin or eye irritation, particularly in sensitive individuals; dust may mildly irritate respiratory tract if inhaled.
Pictograms: No pictograms required.
Precautionary Statements: Avoid breathing dust, prevent skin and eye contact, wash hands after handling, use in well-ventilated area.
Potential Health Effects: Inhalation may trigger mild throat irritation; direct exposure to eyes or skin can cause redness or dryness; accidental ingestion in large amounts could lead to nausea.
Environmental Hazards: Expected to pose low hazard to aquatic life and terrestrial environments at normal use concentrations.

Composition / Information on Ingredients

Chemical Identity: Sodium Acetate Anhydrous
CAS Number: 127-09-3
Concentration: Greater than 99% by weight in reagent or laboratory grade products; lower in formulated solutions.
Impurities: Trace levels of water, acetic acid byproduct, sodium carbonate sometimes reported (each less than 1% if present).
Additives: No significant additives found in high-purity chemical form intended for laboratory or industrial uses.

First Aid Measures

Inhalation: Move affected person to fresh air, offer water, seek medical attention if symptoms persist or discomfort increases.
Skin Contact: Wash skin thoroughly with soap and water; remove contaminated clothing and launder before reuse.
Eye Contact: Rinse eyes immediately with running water for at least fifteen minutes, keeping eyelids open; consult physician if irritation continues.
Ingestion: Rinse mouth, drink plenty of water, contact medical help if feeling unwell or if a large quantity of product has been swallowed.
Important Symptoms: Irritation, redness, mild cough, dryness, headache possible with repeated contact.

Fire-Fighting Measures

Suitable Extinguishing Media: Dry chemical, carbon dioxide, foam, or water spray, depending on surrounding fire.
Specific Hazards: Product does not burn easily, but decomposes at very high temperatures to emit carbon oxides and sodium compounds.
Protective Equipment: Firefighters wear self-contained breathing apparatus and protective clothing to avoid contact with dust and decomposition products.
Thermal Decomposition: Breaks down above 324°C, releasing acetic acid fumes and sodium oxide.

Accidental Release Measures

Spill Management: Sweep up spilt material using methods that minimize dust generation; collect in a suitable, labeled container for disposal.
Personal Precautions: Use protective gloves, safety eyewear, and dust mask if handling powder in confined areas or in case of large spills.
Environmental Precautions: Prevent spillage from entering drains, surface water, or soil; notify authorities if environmental contamination occurs.
Cleanup Methods: Wash affected area with water after initial sweep and collect rinsate for disposal if required.

Handling and Storage

Handling: Avoid generating or breathing dust; wear standard laboratory protective gear such as gloves, goggles, and a dust mask for repeated exposure.
Hygiene Practices: Wash hands before eating, using the bathroom, or contacting face.
Storage Conditions: Store in sealed containers away from moisture and incompatible materials including strong acids and oxidizers.
Storage Temperature: Keep in a cool, dry, ventilated location; no refrigeration necessary for most uses.
Incompatibilities: Avoid contact with strong acids, corrosive substances, and oxidizers which can provoke hazardous reactions or degradation.

Exposure Controls and Personal Protection

Occupational Exposure Limits: No established threshold limit value (TLV) for sodium acetate anhydrous.
Engineering Controls: Employ good laboratory or industrial ventilation; use dust extraction if risk of airborne particulate.
Personal Protection: Protective safety goggles, chemical-resistant gloves, laboratory coat, disposable dust mask for sensitive individuals or high-volume handling.
Eye Protection: Safety glasses or chemical splash goggles especially during bulk transfers.
Hand Protection: Nitrile or latex gloves for most routine applications.
Respiratory Protection: Use particulate respirator if dust levels rise above comfort levels in closed spaces.
Environmental Controls: Maintain containment and spill response plans for bulk storage and handling.

Physical and Chemical Properties

Appearance: White, crystalline powder or granules.
Odor: Slight vinegar-like odor from trace acetic acid, not pronounced.
pH (10% Solution): Around 8.9 at 25°C.
Melting Point: 324°C
Boiling Point: Not measurable (decomposes on heating).
Solubility in Water: Fully soluble, 76g/100mL at 25°C.
Vapor Pressure: Not applicable for solid.
Density: 1.53 g/cm³ at 20°C
Flash Point: Not flammable.
Upper / Lower Flammability: Not applicable.
Partition Coefficient: Not measured.
Decomposition Temperature: Decomposes above 324°C producing strong acetic odors.

Stability and Reactivity

Stability: Stable under normal ambient and recommended storage conditions.
Conditions to Avoid: High humidity, exposure to acids and oxidizers, and high heat leading to decomposition.
Reactive Materials: Reacts with strong acids producing acetic acid vapors; reacts with strong oxidizers.
Decomposition Products: Carbon dioxide, acetic acids, sodium oxides formed above decomposition temperatures.
Polymerization: Will not polymerize.

Toxicological Information

Acute Toxicity: Oral LD₅₀ in rats about 3530 mg/kg; low acute toxicity at typical exposure.
Skin Corrosion/Irritation: Mildly irritating with repeated or prolonged contact in some individuals.
Serious Eye Damage/Irritation: Can cause temporary eye discomfort.
Respiratory Sensitization: Dust may provoke minor upper airway irritation.
Chronic Effects: Repeated high exposures potentially contribute to dryness and irritation but are not likely through routine use.
Carcinogenicity: No strong evidence of carcinogenic or mutagenic activity documented.
Reproductive Toxicity: No adverse reproductive impacts seen in animal studies.
Medical Considerations: Skin and respiratory disorders may become aggravated with high exposures in at-risk populations.

Ecological Information

Ecotoxicity: Product has low toxicity to aquatic life at environmental concentrations from normal use; elevated levels may increase biological oxygen demand and slightly shift pH.
Persistence and Degradability: Biodegradable; readily broken down by microbial activity in soil or water.
Bioaccumulative Potential: Not expected to build up in aquatic or terrestrial animals.
Mobility in Soil: Dissolves easily in water, migrates through soil with rainfall.
Other Adverse Effects: No known hazardous effects to the ozone layer or volatile organics released.

Disposal Considerations

Waste Disposal Methods: Dispose of large amounts at approved facility following local and state regulation for non-hazardous laboratory or industrial chemicals; small amounts can be washed to drain with plenty of water in most jurisdictions.
Container Disposal: Empty packaging should be rinsed before recycling or disposal according to community waste management guidelines.
Precautions: Prevent product from entering surface waters in bulk quantities; consult local environmental authority for best practices if unsure.

Transport Information

UN Number: Not regulated.
Proper Shipping Name: Sodium acetate anhydrous
Transport Hazard Class: Not a hazardous material under UN, DOT, ADR, IMDG, or IATA rules.
Packing Group: Not defined.
Labeling: No hazard symbol required.
Special Transport Precautions: Shield containers from moisture and damage during transit; store in transit with general cargo, not near acids.

Regulatory Information

OSHA Status: Not considered a hazardous substance under standard US OSHA criteria.
TSCA Status: Registered, listed on TSCA inventory.
DSL/NDSL (Canada): Listed.
REACH (EU): Registered.
SARA Title III: Not listed as a Section 313 toxic chemical.
California Proposition 65: Not listed as a substance known to cause cancer, birth defects, or reproductive harm.
Other Listings: Included in inventories in Australia (AICS), Japan (ENCS), Korea (ECL), China (IECSC).
Additional Regulations: Follow local, state, national, and international laws covering chemical procurement, handling, and disposal for laboratory and industrial users alike.